83440643066118 has 80 divisors (see below), whose sum is σ = 205635132964800. Its totient is φ = 25127787734784.

The previous prime is 83440643066111. The next prime is 83440643066159. The reversal of 83440643066118 is 81166034604438.

83440643066118 is a `hidden beast` number, since 8 + 34 + 4 + 0 + 6 + 430 + 66 + 118 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83440643066111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 421395043 + ... + 421593006.

It is an arithmetic number, because the mean of its divisors is an integer number (2570439162060).

Almost surely, 2^{83440643066118} is an apocalyptic number.

83440643066118 is an abundant number, since it is smaller than the sum of its proper divisors (122194489898682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83440643066118 is a wasteful number, since it uses less digits than its factorization.

83440643066118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842988123 (or 842988114 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 83440643066118 in words is "eighty-three trillion, four hundred forty billion, six hundred forty-three million, sixty-six thousand, one hundred eighteen".